22409444 has 12 divisors (see below), whose sum is σ = 39255468. Its totient is φ = 11193600.

The previous prime is 22409437. The next prime is 22409461. The reversal of 22409444 is 44490422.

It can be written as a sum of positive squares in 2 ways, for example, as 21529600 + 879844 = 4640^2 + 938^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3164 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (3271289).

Almost surely, 2^22409444 is an apocalyptic number.

It is an amenable number.

22409444 is a deficient number, since it is larger than the sum of its proper divisors (16846024).

22409444 is a wasteful number, since it uses less digits than its factorization.

22409444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566 (or 5564 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 22409444 is about 4733.8614259397. The cubic root of 22409444 is about 281.9315596029.

Adding to 22409444 its reverse (44490422), we get a palindrome (66899866).

The spelling of 22409444 in words is "twenty-two million, four hundred nine thousand, four hundred forty-four".